You work as a network Exchange administrator at Company.com.The Company.com network currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com organization makes use of Microsoft Exchange Server 2010 as their messaging solution.During the course of the business week you receive instruction from Company.com to ensure that deleted mailboxes are kept for 8 weeks on the Mailbox server.What should you do？（）

• A、You should consider having the properties of the Mailbox database modified.
• B、You should consider having the properties of the Mailbox server object modified.
• C、You should consider having a Retention Policy created.
• D、You should consider having a managed folder mailbox policy created.